document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=712236>Question 712236</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the method of elimintion to solve system\r<BR>\n" );
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document.write( "2x+y+3z=30 <BR>\n" );
document.write( "4x-3y+6z=50 <BR>\n" );
document.write( "x+y-2z=30 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #437816 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=437816\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the method of elimintion to solve system <BR>\n" );
document.write( "2x+y+3z=30 <BR>\n" );
document.write( "4x-3y+6z=50 <BR>\n" );
document.write( "x+y-2z=30\r<BR>\n" );
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document.write( "------<BR>\n" );
document.write( "List the 3rd equation 1st:<BR>\n" );
document.write( "x+y-2z=30<BR>\n" );
document.write( "2x+y+3z=30 <BR>\n" );
document.write( "4x-3y+6z=50 <BR>\n" );
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document.write( "Subtract 2 times the 1st from the 2nd<BR>\n" );
document.write( "Subtract 4 times the 1st from the 3rd<BR>\n" );
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document.write( "x+y-2z=30<BR>\n" );
document.write( "0-y+7z=-30 <BR>\n" );
document.write( "0-7y+14z=-70 <BR>\n" );
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document.write( "Subtract 7 times the 2nd to the 3rd:<BR>\n" );
document.write( "x + y - 2z = 30<BR>\n" );
document.write( "0 - y + 7z = -30<BR>\n" );
document.write( "0 + 0 -35z = 140<BR>\n" );
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document.write( "Divide both sides by -35 to get:<BR>\n" );
document.write( "x + y - 2z = 30<BR>\n" );
document.write( "0 - y + 7z = -30<BR>\n" );
document.write( "0 + 0 +  z = -4<BR>\n" );
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document.write( "Solve the 2nd equation for \"y\":<BR>\n" );
document.write( "-y -28 = -30<BR>\n" );
document.write( "y = 2<BR>\n" );
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document.write( "Solve the 1st equation for \"x\":<BR>\n" );
document.write( "x + 2 + 8 = 30<BR>\n" );
document.write( "x = 20<BR>\n" );
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document.write( "solution: x = 20; y = 2; z = -4<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H,\r<BR>\n" );
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document.write( "--------\r<BR>\n" );
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document.write( " </SPAN>\n" );
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